Gustav Adolph Kleene. Profit and wages: a study in the distribution of income. The Macmillan Company, 1916.

A.W. Shaw Company, How to run a store at a profit: figuring expenses and mark-up-counter and window displays-how a retailer increased business 400 in fourteen months-short cuts in handling trade-larger net profits-training your men to sell; methods by which 62 retailers sold more goods at less expense. A.W. Shaw Company, 1915.

P. Roger Cleary, How to figure profit: a comprehensive reference book for business men, teachers and students. The P. R. Cleary company, 1918.

John Elliot Read, Farming for profit: An encyclopedia of useful information and a practical assistant in the management of farm affairs. Devoted to agriculture and mechanics, fruit growing and gardening, live-stock, business principles, home life, and showing how to make money and secure health and happiness on the farm. J.C. McCurdy & Co., 1884.